An "H" rating denotes a non-inductive resistive rating. Does that seem like the definition of the. Designers uses short name (abbreviation) for the electrical components and equipment in electrical drawings tha...
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What does H represent in the power supply of the cabinet - GDR Telecom Site Energy Systems [PDF]
Although electrical components are represented by universally accepted schematic symbols, there are a number of variants and alternative symbols used throughout the world to represent the same
These symbols may represent elements such as water heaters, electric heaters, radiators, and underfloor heating systems. On a floor plan, they help indicate how heat and hot water
Inside the control cabinet, there are many components from servo drives to PLCs and terminal blocks. Power is typically supplied to the cabinet from the top portion.
symbolism is based on the Roman and Greek alphabets. There are fewer than 90 distinctive capital and small letters to represent some thousands of scientific and technical
Ratings listed... may appear with the symbol "H" or with the words "non-inductive" or "resistive". "H" ratings are typically required for switches used in commercial oven applications.
Volt, ampere, power, earth, neutral, capacitor, resistor, alternating current, direct current, low voltage, high voltage, extra low voltage, low voltage, mega voltage, high voltage and extra high
The lines in the diagram represent wires that connect different components. A solid line usually symbolizes power and signal wires, while a dashed line may indicate protective wires (PE).
Letters: The first letter (or two) indicates the component type (e.g., R for resistor, C for capacitor, D for diode, U for integrated circuit). Numbers: The number following the letter uniquely
Inductors: The inductance is given in henries (H). For example, “L1 100mH” means the inductor has a value of 100 millihenries. Voltage Ratings: Components may have voltage ratings
OCCUPANCY SENSOR, CEILING MOUNTED, DUAL TECHNOLOGY. THE CONTRACTOR SHALL PROVIDE ALL REQUIRED POWER PACKS OCCUPANCY SENSOR WALൌ MOUNTED, DUAL